While it appears to be random and not related to intensity of battles or of graphics, I am unable to explain why my machine's Radeon HD 5770 continues to crash on Starcraft 2 Beta. The beta worked fine before, but now it keeps messing up. Specifically, here is what happens:

1. Start a game.
2. Build up, even against computer AI or humans
3. When conflict arises, sometimes the card is fine. Sometimes its not. If not,
a. game freezes except can still hear audio and mouse still moves.
b. video card gives up, monitor disconnects, screen goes blank and then full colored with 1 color displaying;
c. card comes back for about 2 seconds, can move units in the game, can hear audio, card freezes again. Continues.

Operating System: Windows 7
Processor Info: Intel (R) Core (TM) 2 CPU
Ram Info: 4.00 GB
Direct X Version: Unknown
Card Name: Power Color
Manufacturer: Tul Corporation
Chip Type: ATI Radeon HD 5770
Device Identifier:
Vendor ID:
Device ID:
Display Memory:
Current Mode:
Native Mode: Dual DVI HDMI DisplayPort
Driver Version:
Driver Date/Size:

Let me know if you need any of the information I left out, and where I can find it.

Just to give more information on this, it is happening with 100% consistency now.

En taro tassadar, Zeratul!

Please provide that information that is missing. You can find it in your dxdiag:
To obtain a DXDiag:
- Press the Windows Key + R at the same time.
- In the Open: field type in dxdiag and click the OK button.
- Click Save All Information, then open the file and copy the requested information into your post.

Thanks!